Home / 20,350.32-28,084.50-11,397.30

Finding the Fourth Proportional to 20,350.32, 28,084.50 and 11,397.30

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Solution

The fourth proportional to 20,350.32, 28,084.50 and 11,397.30 is: 15,728.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,350.32 : 28,084.50 = 11,397.30 : x
  2. Step 2: Convert to fraction form
    20,350.32/28,084.50 = 11,397.30/x
  3. Step 3: Cross multiply
    20,350.32x = 28,084.50 × 11,397.30
  4. Step 4: Simplify right side
    20,350.32x = 320,087,471.85
  5. Step 5: Solve for x
    x = 320,087,471.85/20,350.32
  6. Step 6: Final answer
    x = 15,728.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.